JPS6034181B2 - cassette tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder, particularly a device for ejecting a cassette using power such as a motor.

By using the power of the motor, the operating force can be reduced by using the power of the motor to carry out the so-called ejection operation in which the cassette at the playing position is raised and ejected to the position where it can be taken out.

In this case, in order to transmit or cut off motor power to the rotating cam body that performs discharge, a method using toothless gears has been considered, but especially when used in a vehicle,
There was a risk that the missing teeth would accidentally engage due to vibration, shock, etc. The object of the present invention is to transmit the rotational power of the motor to the rotary cam body in response to an external ejection command without causing such malfunctions, and after ejecting the cassette by the rotation of the rotary cam body, connect the cassette to the rotary cam body. To provide a tape recorder with a cut-off function.

Therefore, the present invention provides a first rotary body rotated by a motor, a rotary cam body that rotates when receiving power from the motor and ejects a cassette, and a rotary cam body that constantly engages with gears of the rotary cam body and that rotates when receiving power from the motor. A sun gear is connected between an idler gear that can rotate around the center, a second rotating body integrally formed with the idler gear, and a rotating cam body that rotatably supports the idler gear and the second rotating body. A lubricating member forming the device, a locking portion provided at one end of the sliding member, and a lubricating member provided at one end of the sliding member, the sliding member rotating during a discharge operation to
and a locking member that locks the locking portion of the damage member at a position where the second rotating body is coupled, and a locking of the locking member is released by a projection of the rotating cam body at the end of the ejection stroke. The rotation of the rotary cam body is stopped by releasing the coupling between the first rotary body and the second rotary body.

Embodiments of the present invention will be described below with reference to the drawings. 1 to 9 show one embodiment of the present invention, and FIG. 10 shows another embodiment. In FIGS. 1 and 2, a motor 5 is arranged at the front center of the chassis.

In FIG. 2, the motor 2 is attached to the chassis 1 with its shaft 2a
is attached so as to extend through the chassis to the lower surface side of the chassis 1, and a motor pulley 3 is fixed to the lower end of the shaft 2a. Two belts 4 and 5 are suspended in a direction substantially opposite to this motor pulley 3. One belt 4
is suspended between flywheels 7 and 8 via an intermediate pulley 6, and is configured to transmit the rotation of the motor 2 to the flywheels 7 and 8, as in a normal tape recorder. The other belt 5 is hung around a pulley 9. The pulley 9 is fixed to the lower end of a shaft 10 in FIG. 2A, and the shaft 10 extends upward through a bearing 11 fixed to the chassis 1, and a pinion gear 12 is fixed to the upper end. In FIG. 2, a gear arm 14 is rotatably supported on the support shaft 13 of the chassis 1 as shown in FIG. An idler gear 18 consisting of a gear 16 and a small gear 17 is rotatably mounted.

A spring 20 acts on the hook portion 19 of the gear arm 14 to rotate the gear arm 14 clockwise, but the movement is regulated by a stopper 21 cut and raised on the chassis, and the idler gear 18 and the pinion gear 12
It is separated from the other by a suitable distance. A locking arm 23 is rotatably supported on a support shaft 22 of the shaft 1, and although the locking arm 23 is biased clockwise by the action of a torsion spring 24 coaxially equipped with iron, the tip locking portion 25 hits the locking pawl 26 of the gear arm 14 and is prevented from moving.

The torsion spring 24 also has the function of a compression spring.
The locking arm 23 is pressed against the chassis surface to prevent it from floating up. When a force in the direction of the arrow is applied to the operating portion 27 of the gear arm 14, the gear arm 14 rotates counterclockwise, the locking pawl 26 and the locking portion 25 of the locking arm 23 engage, and the force is removed thereafter. However, the gear arm 14 remains locked even under the action of the spring 20. As the gear arm 14 rotates, the pinion gear 12 and the large gear 16 of the idler gear 18 engage with each other, and this state is maintained. In this embodiment, as a method for pressing the operating portion 27, a method using a solenoid will be described.

A bracket 28 shown by a dashed line in FIG. 4 is fixed to the chassis with screws 28' and 28', and a pin 31 is attached to the tip of a plunger 30 of an electromagnetic solenoid 29 (hereinafter referred to as solenoid) held by the bracket 28. The pin 31 is passed through the hole 32 in FIG. 5 of the operating portion 27. Therefore, by energizing the solenoid 29 and attracting the plunger 30, the gear arm 14 can be rotated in any direction. The small gear 17 of the idler gear 18 is a cam gear rotatably iron-mounted on the support shaft 13.
It is always in mesh with the gear 34 of the gear 33, and the small gear 1
7 and the cam gear 33 form a planetary gear device.

The cam gear 33 is formed of a molded product, and as shown in FIG. 7, a helical cam 35 is formed on the bottom surface of its outer periphery. To the cam 35, as shown in FIG. 8, an arm 38 is swingably attached to the side wall 36 of the chassis 1 about a shaft 37, and a roller 39 is rotatably supported at one end of the arm 38. This roller 39 is opposed to the cam 35 of the cam gear 33, and is configured to perform rocking motion in relation to the rotation of the cam gear 33 by coming into contact with the cam 35. A roller 40 is similarly rotatably supported at the end of the arm 38, and is fitted between a pair of protrusions 42 and 43 formed on the side surface of a cassette holder 41 shown in FIG. 9, which will be described later. , and is adapted to fit into a roller receiving portion 45 formed on the lower surface of the cassette arm 44. Furthermore, arm 3 in Figure 8
A pin 46 is raised near the roller 39 of 8, and is configured to engage with an engaging portion 47' formed on a lock arm 47, which will be described later. This lock arm 47 is rotatably supported at its lower end by a pin 130 that stands on the chassis, and is biased clockwise by a spring 47''.Both sides of the cassette arm 44 in FIG. holes 48 and 49 are provided therein,
The holes 48 and 49 intersect with a support shaft 50 that is upright on the side wall 36 of the chassis shown in FIGS. 2 and 3, and a support shaft 51 that is upright on the bracket 28, and use this joint as a support The cassette arm 44 is designed to be able to swing vertically.

A pair of support shafts 52 and 53 are erected at the end of the cassette arm 44, that is, on the right side in FIG.
It is constructed so as to be supported by iron-coupling holes 54 and 55 provided at approximately the center of 1. The cassette holder 41 is a member that guides or holds the cassette during mounting and ejection.
Through holes 60, 61 and 62 are formed on the right side surface so that the magnetic head 57 and pinch rollers 58 and 59 shown in the figure can enter the cassette and perform normal PLAY operations.

The cassette holder 41 is connected to the support shaft 52 of the cassette arm 44,
If the cassette is only supported by the cassette 53, it will swing around using this as a fulcrum, making the cassette's posture unstable from the time the cassette is inserted to the time it descends to the playing position. There is a possibility that the push stamps 63, 63', reel stands 64, 64', cassette guides 65, 66, etc. that should be inserted into the through holes may not be inserted smoothly. 40 and a pair of protrusions 4 in FIG.
2 and 43, an IJ link mechanism is formed over the entire body including the cassette arm 44, thereby controlling the posture of the cassette holder 41 to be maintained in a substantially horizontal state. An arm 67 extending downward is formed at one end of this cassette arm 44, and reaches the bottom of the chassis through a hole in the chassis, and has a hook portion 68 at the tip and a bracket 28 shown in FIG.
A sprung IJ ring 70 is stretched between the hook portions 69 of.

Therefore, since the cassette arm 44 is receiving a clockwise biasing force, when the engagement between the lock arm 47 and the pin 46 of the arm 38 is released, the roller receiving portion 45 presses the roller 40 of the arm 38. , one roller 39
is configured so that it can rise and contact the cam 35 of the cam gear 33. As shown in FIG. 8, a first switch 71 is attached to the lower side of the chassis 1.
Collar 72 fixed coaxially with roller 40 of arm 38
The arm 38 is disposed so as to be in contact with the arm 38, and is in the OFF state except when the cassette is in the second position in which it is being played, and when the cassette is lowered and held in the second position, the arm 38
The collar 72 presses the pressure receiving part 73 of the switch 71 and
Set to N state. That is, this first switch 71 detects that the cassette is installed in the second position, and turns the motor 2 on.
It is for rotating. Figure 6, Figure 7, Figure 3
As shown in the figure, an arcuate projection 74 is formed on the upper surface of the cam gear 33 over approximately half the circumference, and a cylindrical projection 74 is formed at one end of the arcuate projection 74.
5 is sticking out above it.

On the other hand, as shown in FIG.
．． 7 and is biased clockwise by a spring 78 wound around a support 77, and an arc-shaped protrusion 75 of the cam gear 33 is fitted with iron in the cam hole 79, so that the cam gear 33 is closed when the cassette is ejected. The discharging speed of the ejector arm 76 is controlled according to the rotation angle of the ejector 33. In FIGS. 4 and 3, a switch plate 80 is placed on the bracket 28. As shown in FIGS. The right protrusion 80a of the switch plate 80 fits into a hole 28a provided on the bracket 28, and the left side is fixed with a screw 81 shown in FIG.
A switch arm 83 and a connecting arm 84 are rotatably mounted on a supporting rod 82 that stands on the switch plate 80, and an engaging piece 86 that hangs downward is formed on the connecting arm 84. This engagement piece 85 is connected to the eject arm 76.
It faces a protrusion 86 formed in the top and is rotatable clockwise when pressed by the protrusion 86. The distal end of the connecting arm 84 is inserted into an elongated through hole 87 provided in a "shaped part" on the side surface of the chassis, and is further supported by forked protrusions 88 and 89 formed at the distal end of the lock arm 47. Since the forked protrusions 88 and 89 at the tip of the lock arm 47 are also inserted into the through hole 87 on the side of the chassis, the connecting arm 84 and the lock arm 47 themselves can operate reliably with less play. This series of link mechanisms prevents the eject arm 7 from becoming disconnected when the cassette is inserted.
6 rotates. The operation of unlocking the lock arm 47 is reliably performed. A second switch 90 is further fixed to the switch plate 81 with a screw, and is arranged so that when pressed by one arm 91 of the switch arm 83 extending in an L-shape, the switch 90 is turned on. There is.

A spring 92 is stretched between the switch arm 83 and the switch plate 81, and urges the switch arm 83 counterclockwise. The other arm 93 of the switch arm 83 is arranged so as to come into contact with the cylindrical projection 75 of the cam gear 33, and the cylindrical projection 75 presses the arm 93 against the action of the spring 92, causing it to rotate clockwise. A place to be
In this case, the arm 91 is moved away from the switch 90, so it is turned off.
However, when the cam gear 33 rotates and the cylindrical projection 75 separates from the arm 93, the switch arm 83 rotates counterclockwise due to the force of the spring 92, and the switch 90
Press to turn on. This second switch 90
The motor 2 is connected in parallel with the first switch 71 shown in FIG. In this case, the second switch 90 is turned ON before the first switch 71 is turned OFF to continue rotating the motor 2, and the second switch 90 is turned OFF when the ejection of the cassette is completed. is camgy 33
It is carried out by In FIG. 3, a protruding contact portion 94 is formed on the side of the cassette arm 44 of the eject arm 76, and the corresponding saddle portion 94 is inserted into the cassette holder 41 and when pushed by the cassette, the eject arm 76 rotates in the counterclockwise direction and the cassette arm 4
When the cassette arm 44 and cassette holder 41 are moved back to the second playing position, the cassette arm 44 is pressed backward by a pressing portion 95 formed on the cassette arm 44, and the Tip 96 of arm 76
Since it is separated from the cassette 56, the predetermined relationship between the cassette and the main body of the apparatus is not disturbed.

That is, when a part of the cassette is pressed, the reel stand 64,
It is possible to prevent problems such as misalignment of the positional relationship between the magnetic head 64' and the hub of the cassette, or a change in the amount of advance of the magnetic head 57 or the way it hits the pad. As shown in FIG. 6 and FIG.
In the process of ejecting the cassette, the ketobashi part 97 closes the large gear 1 of the idler gear 18 at the time when the cam gear 33 rotates once and the cassette is completely ejected.
By kicking the arm 98 extending to one side of the locking arm 23, the engagement between the gear arm 14 and the locking arm 23 is released. By returning until it comes into contact with the stopper 21 of No. 11, the transmission of rotation from the pinion gear 12 to the cam gear 33 is interrupted, and the 8E exit is completed.

When the rotation of this cam gear 33 is cut off, the cam gear 33
Looking at the relationship between the inclined position of the cam 35 in FIG. 8 and the roller 39 of the arm 38 in FIG. The reverse cam portion 99 and the roller 39 are held in a state facing each other, and when the cassette is inserted in this state and the lock arm 47 is unlocked, the cassette arm 44 begins to fall rapidly due to the force of the spring 70. However, since the roller 39 abuts against the inclined surface of the reverse cam portion 99, it functions to rotate the cam gear 33.

The engagement between the cam gear 33 and the idler gear 18 shown in FIG. 6 is such that the cam gear is decelerated when viewed from the idler gear side, but conversely, when viewed from the cam gear side, the idler gear is accelerated. Even if there is a slight resistance on the side, it becomes a large load torque on the cam gear.

Utilizing the relationship between the two, grease is applied between the idler gear 18 and the gear shaft 15 to provide viscous resistance.
Even if the roller 39 rises rapidly and attempts to rotate the cam gear 33, a large load torque is generated, so the roller 39 acts as a damper and its rising speed is greatly reduced. Therefore, the cassette arm 44 and the cassette holder 41 on which one roller of the arm 38 is riding, and the first position of the entire cassette (cassette ejection and insertion position)
The lowering from the position to the second position is done quietly and not abruptly, and no loud impact noise is generated, so there is no need to irritate the nerves of the user. Next, we will explain the operation of the above configuration. We will explain the state when the cassette is ejected and the related parts. Since the pin 46 of the arm 38 is locked to the lock arm 47, the pin 46 of the arm 38 is locked to the lock arm 47, so The roller 40 on the opposite side is the spring 7 of the cassette arm 44.
The cassette arm 44 and the cassette holder 41 are pushed up and held against the zero force to the ejectable position (first position).

Therefore, the first switch 71 is naturally in the OFF state. The posture of the eject arm 76 is regulated by the arcuate protrusion 74 of the cam gear 33 despite the biasing force of the spring 78, and at the time of ejection, it is in the most clockwise rotated state, and its tip is inside the cassette holder. It's going deep.
Since the switch arm 83 is pressed by the arcuate protrusion 74 of the cam gear 33, the second switch 90 is in the OFF state, and therefore the first and second switches 71 and 90 are both OFF.
Due to the current condition, motor 2 is stopped. Since the locking arm 23 is unlocked by the hook portion 97 of the cam gear 33, the gear arm 14 is rotated clockwise by the action of the spring 20 and comes into contact with the stopper 21 of the chassis 2. Therefore, pinion gear 12 and idler gear 18
The mesh has been released. The connecting arm 84 coupled to the lock arm 47 is in a state of being moved counterclockwise because the lock arm 47 is in a locked state and the eject arm 76 is in a clockwise rotating state. In this state, when the cassette is inserted from above while being guided by the upper and lower side walls of the cassette holder 41, the tip of the eject arm 76 is pressed against the tip of the cassette and the eject arm 76 is rotated counterclockwise. let When the cassette is further pressed, the protrusion 86 of the eject arm 76 comes into contact with the engagement piece 85 of the connecting arm 84, and by rotating this clockwise, the engagement between the lock arm 47 and the pin 46 of the arm 38 is released. The lock arm 47 is moved in the direction shown in FIG.

When the cassette is further pushed in and reaches the depth that should be installed in the second position, the lock arm 47 and the pin 46 of the arm 38 are disengaged, and the arm 38 is moved by the force of the spring 7n and the cassette arm 44 and the cassette The holder 41 and the cassette 56 are rotated counterclockwise by their own weight, so that the cassette arm 44, the cassette holder 41, and the cassette are lowered together and installed in the second position which is to be the performance calendar. At this time, the first switch 71 is connected to a collar 72 fixed coaxially with the roller 40 of the arm 38.
The motor 2 starts rotating because it changes from OFF to ON. The displacement arm 76 is separated from the front surface of the cassette by the cassette arm 44. Therefore, the cassette will be played on standby, and from then on, the normal PL
Although operations such as AY, FF, and REW are performed, their explanations are omitted since they are not directly related to the present invention.

Motor 2 - Belt 5 - Pulley 9 and pinion gear 12
is rotating.

On the other hand, the cam gear is forcibly rotated by the upward movement of the roller 39 of the arm 38, and the roller 39 reaches the highest position (the lowest point when viewed from the cam side) and stops moving. As explained above, resistance is generated in the gear portion at this time, and the damper device has an appropriate effect. With the roller 39 falling down into the valley 1001 of the cam 35 of the cam gear 33, the switch arm 83 is pressed by the cylindrical projection 75, so that the second switch 9 remains in the OFF state. Normal PLAY, F
When the performance or operation of F, REW, etc. is finished and it becomes necessary to eject the gas, a switch (not shown in the figure) linked to the eject button is provided, and when the eject button is pressed and the switch is turned on, , the solenoid 29 rapidly suctions the plunger 30.

The gear arm 14, which is connected to the plunger 30 by a pin 31, rotates in the opposite direction against the spring 201. Therefore, the idler gear 18 meshes with the rotating pinion gear 12, and this rotation is transmitted while being decelerated, and further decelerated and transmitted to the cam gear. Since the gear arm 14 is held in a locked state by the locking arm 23 in this attracted position, the rotation of the pinion gear 12 is continuously transmitted to the cam gear 33 even when the solenoid 29 is de-energized.

When the cam gear 33 starts rotating, the pressure on the switch arm 83 is released, and the second switch 90 is moved by the spring 92.
Changes to the ON state by the force of. The roller 39 in contact with the inclined cam 35 starts to descend following the increase in the lift of the cam 35, and therefore the cassette arm 44, cassette holder 41, and cassette 56 start to rise, and the collar 72 of the arm 38 is pushed. The pressure is released and the first switch 71 is turned off. At this time, since the second switch 90 is already in the ON state, the motor I continues to rotate. At this time, since the pressure of the pressing portion 95 formed on the cassette arm 44 is released, the rear part 94 of the eject arm 76 is urged in the direction of contacting the cassette by the force of the spring 78. On the arcuate projection 74,
Since the cam hole 79 of the eject arm 76 is controlled to restrict its rotation, the cassette does not come into contact with the cassette even if the cassette arm 44 is no longer pressed, so that the cassette moves upward smoothly.

As the cam gear 33 rotates further, the cassette finally rises to the highest ejectable position (first position).

At this point, the arcuate protrusion 74 that was regulating the rotation of the eject arm 76 is discontinued, so the eject arm 76 is inserted between the cam hole 79 surface and the terminal end 1 of the arcuate protrusion 74.
01 begins to rotate while making contact with the cassette, and ejection of the cassette begins. On the other hand, the lock arm 47 is now the arm 38.
As a result, the cassette arm 44 supported by the other roller 401 of the arm 38 and the cassette holder 41 held by the cassette arm 44 are held in the first position where the cassette can be inserted and ejected. be done.

Although the eject arm 76 is urged to rapidly eject the cassette by the spring 78, the ejection speed is controlled by the arc-shaped protrusion 74 of the cam gear 33 and follows the rotation of the cam gear 33, so that the cassette is ejected. The movement is performed slowly and smoothly, and there is no problem of the object jumping out with force.

Before the ejection stroke of the cassette is completed, the kick part 97 of the cam gear 33 kicks the arm 98 of the locking arm 23 to release the locked state, so the gear arm 14 with the idler gear 18 reloaded is moved clockwise by the biasing force of the spring 20. , the pinion gear 12 and the idler gear 18 are disengaged, and the transmission of rotation to the cam gear 33 is completed.

At approximately the same time, the cylindrical projection 75 of the cam gear 33 rotates, contacts and presses the switch arm 83, turns the second switch 90 into the OFF state, and the motor 2 stops. The eject arm 76 is supported by both ends of the arcuate protrusion 74 of the cam gear 33 and the cam hole 79 of the eject arm 76, so that further rotation is restricted. This also applies to the rotation of the cam gear 33 as well as the eject arm 76.
This prevents the stop position from changing due to vibration etc. when the cassette is not inserted. In the above embodiments, an example in which the ejection operation is performed by an electrical method using a switch and a solenoid has been described. Next, a mechanical method will be described with reference to FIG.

However, since the parts other than the means for starting the ejecting operation are the same, duplication of explanation will be avoided. In addition, in this embodiment, since the PLAY state is entered by button operation, the motor does not rotate even if the cassette is simply installed in the playing position, but the motor rotates when each operating lever is operated. ing. In Fig. 10, ejection push button 1
A switching lever 104 that moves in conjunction with the operating lever 103 and engages with the operating lever 103 only when in the STOP state is attached to a supporting shaft 105 on the chassis 1. and spring 106
Due to this, the village power is being controlled.

In this case, a force to rotate counterclockwise around the support shaft 105 and a force to move in the direction of the push button 102 are generated, and the movement is caused by It is regulated by the support shaft 105 surface. The operating lever 103 is attached to the stepped portion 108 formed on the cutting lever 104.
The cutting and raising support part 109 is arranged so as to be able to touch the button, and is configured to be able to move in the direction in which the push button 102 is pressed when pressed. The cutting bar 104 has arms 110 and 111 that are open in a fork shape, and the distal end 1 of one of the arms 111 is open.
12 is arranged facing the leaf spring 113. This leaf spring 113 is fixed to an operating arm 115 which is rotatable around a spinal column 114 provided on the chassis 1, and a slotted hole 116 formed at the tip of the operating arm 115 is inserted into a slotted hole 116 formed at the tip of the operating arm 115. The gear arm 14 is configured to be able to convert clockwise rotation of the operating arm 115 into counterclockwise rotation about the support shaft 13 of the chassis 1. Gear arm 14's idle gear 1
The tip of the arm 118 extending perpendicularly to the gear shaft 15 of No. 8 is connected to the pressure receiving part 120 of the switch 119 held on the chassis.
are opposed to each other, and the switch 119 is configured to turn on when the gear arm 14 rotates counterclockwise.

In this case, it is considered that the switch 119 is operated before the idler gear 18 engages with the pinion gear 12 to rotate the pinion gear 12 and then assist the idler gear 18. In other words, this switch 119 is provided to rotate the motor 2 during ejection, and at least the switch 119 must be turned on before the tops of the teeth of the gears come into contact with each other. There are cases where the gears don't mesh, which makes me feel unwell. With the configuration as described above, the operation will be described next. When the ejection button 102 is manually pressed to eject a cassette from the STOP state, the cutting bar 104 is moved in the pressing direction via the operating lever 103. The tip 112 of the arm 111 presses the leaf spring 113 to rotate the entire operating arm 115 clockwise.

Therefore, the gear arm 14 is pushed counterclockwise around the support shaft 13, operating the switch 119 and causing the motor 2 to rotate. The pinion gear 12 and the idler gear 18 mesh with each other, and rotation is transmitted to the cam gear 33, as in the previous embodiment. Similarly, the gear arm 14 is locked by the locking arm 23. In the above series of operations, the reason why the leaf spring 113 is used is because the stroke of the switching arm is greater than the stroke of the gear arm side in order to ensure the engagement of the gears, so the difference in stroke is This is for absorption. In this embodiment, a motor is conveniently used as the power source, but it is of course possible to use a solenoid, etc.
It goes without saying that any method that does not involve human hands, fingers, etc. is included in the present invention.

As described above, according to the present invention, when the power of the motor is transmitted to the rotary cam body during ejection of the cassette, an idler gear is interposed to ensure that the chicks are removed afterwards, and the idler gear is engaged by the rotary cam body itself at the end of ejection. Since the discharge device is released, it is possible to provide a discharge device that operates reliably and is inexpensive.

・

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG.
Figure 3 is an enlarged plan view of the front left side of Figure 2, Figure 4 is a right side view of Figure 3, Figure 5 is from Figures 3 and 4. 6 is a perspective view as seen from direction B in FIG. 5, FIG. 7 is an enlarged perspective view of the cam gear, and FIG. 2 is a left side view, FIG. 9 is a perspective view of the cassette holder 41 and the cassette arm 44, and FIG.
The figure is a partially omitted plan view of another embodiment of the present invention. 2...Motor, 9...Pulley, 14...Gear arm,
18... Idrag gear, 23... Locking arm, 29... Plunger, 33... Cam gear, 38
...Arm, 41...Cassette holder, 44...Cassette arm, 76...Eject arm. Brother 7 figure 1 figure departure 2 figure 2 ticket 5 figure fist 3 figure ticket 4 figure fist 6 figure many 8 figure hair? Diagram:

Claims (1)

[Claims] 1. A cassette holder that holds a cassette and is movable up and down between a device and ejecting position (first position) and a recording/playback position (second position); a holding member that holds the cassette holder so that it can be raised and lowered; an elevating member that raises and lowers the holding member between the first and second positions; an ejection-related member that holds the elevating member at the first position and is energized to enable ejection of the cassette; and an electric motor. a first rotary body driven by a rotor, a rotary cam body having a cam portion that controls the elevation of the elevating member and the cassette ejection speed of the discharge-related member; and a first rotary body that is constantly engaged with the gear portion of the rotary cam body. two rotating bodies, a sliding member that rotatably holds the second rotating body and slides toward and away from the first rotating body; and a sliding member that electrically or mechanically slides the second rotating body. a means for sliding,
a locking member that holds the first rotating body and the second rotating body so that they mesh with each other, and the locking member engages the second rotating body and the first rotating body at the end of the ejection stroke of the cassette. A tape recorder characterized in that the tape recorder is configured to be released from the lock in the state.